Pneumatic rivet passer



March 3, 1931. w. L. GRAY PNEUMTIC RIVET PASSER Fiied April 8, 1927 2 Sheets-Sheet 1 Z9 Pz ",229

INVENTOR Il l 30 Ji 17% F- --wlf Z'r Wim/0.5.61

March 3, 1931. w, L GRAY 1,794,846

PNEUMATIC RIVET PASSER Filed April 8, 1927 2 Sheets-Sheet. 2

INVENTOR ATTORNEY ofthecylindricalftype; whichis adapted to' Patented Mar. 3,' 1931 i k1,794,81e

PATENTgermen WILLIAM L. tifiaivz or [ndern wnYMoUfrn, MASSACHUSETTS, AssiGNon-'ro nn'rntn l i'. V.HEM's1511r` BUILn1NGf oonPoRAroN f 'rN'nUMArIo n'rvnr Passen Application-mee Ajprii s, 1927; serial No. 181,999. c

My invention relates to new anduseful improvements inpneumatic rivet passers.

The primary object of this invention is to provide a novel y'form vof pneumatic rivet passer. which vis rugged in structure, cheap and easily manufactured and whichcontains a Vmini-mum nu-inberv of parts. l. Inra broader aspect my invention pertains; tof-a. rivet passer be inserted directlyy in the yair line :andattached to the forge where lrivets .arelheated f The novel featuresof 5 my invention .will be more fully understood from theffollow-y ing description .and claims taken` with the accompanying drawmgs 1n which:

Fig. 1 is a side elevation of the apparatus? embodying my invention;

Fig. 2 is a` cross sectional view taken on line II-IIof Fig. 4;

Fig. 3 is a side elevation of the rivet'passer;

Fig. 4 isa bottom plan'view of the ap n. paratus;

Fig. 5 is accross-sectional view taken on line V.-V of Fig. 3; Y 7

Figs. 6 and 7 are elevations of the door of the rivet passer;

Fig. 8 is an end elevationv of the door of the rivet passer.

Referring to the drawing: 10 Vdesignates ay forge of any suitable construction forheating rivets. f The body 11 of therivet passer is provided witha bracket 12 bifurcated at its end tofstraddlethe wall of thepanof the forge and is clamped thereto by means of the screw 13 threaded tothe bracket.v The body.A

11 is 'provided with a cylindrical chamber 14 at its lower vend and a passageway 15, which is preferably rectangular in cross section andi open to chamber 14. The body 11 is provided with a laterally disposed elongated opening 16 of such proportion that arivet blank may freely pass therethrough intoV the chamber Y v l fastened thereto by the screws 21.

14. 1 Grooves 17 Vare provided in the body 11 to constitute a slideway iny which the door 18 isslidably mounted.- Fastened to theouter face of the kdoor are brackets 19 which sup-` port the toothed rack .20', the rackbeing A tapered valve seat'23 is bored diametrically through-the body 1l`ata position ap.

. rvSiriita'blef means are the riinperforate surface Vof the valvey lplug prevents the passage of the air tofthe'fchamlf 25 which isofnsubstanti'ally the same cross sectionas the passageway 15j. The end 26 of the valve plug 24 is threaded and extends beyond the face of the boss 27 formed1 on the mounted on thethre'aded .end 26 yfor-the purpose ofdrawing'thevalve plug 24 tightly to itsseat 23.l .1 v

body l11.v AV pair of nuts and a washer are Avsector `gear 32,A having a square aperture i therein,l is mountedo'n the end 29ofvalve f.

. lug-24. In order `to rotatethe valveplug 24: and llI-gear' 32 I. provide anoperating ylia-ndlef28.'`

i provided to retain the handle 28 in fixed relationtothe valve plug r24 and the gearf32, andfor this rpurposey I showrnachine screws .30 and 31 threaded in the end of thevalve lplug 24 and thesideof the gear.A 32, respectively." By rotating the valve plugf24, through the medium iof the handle"28 the opening 25 maybe placedin registry with the passagewayly so that compressed airpmay pass freely through the pas-v sageway 15 to thechamber l14, as hereinafter described.V .Infthe preferred embodi'- ment ofiny inventiom whensaidopeningand Se saidl passageway'are in alignmentgth'e handle is set ina horizontal position land whenv the latter. is turned toa vertical position the opening .is disposed' at right angles to' the rvertical axis 'ofthe Ypassag'evv'ay15' whereby bef 14, raap erf-:a prov1aedenfietaiyiij to pre-vent the tendiente temgfrtmfnedvfbef f l yond its vertical posit-ionf The sector `gear 32 meshes the; opening 25 in the valve Vplug 241s at-right with the rackn/'vf4 v 20-s'o that the door 18j isi causedfto slide in a Y,

the: grooves 17 upon rotation Tof thel handle A28'. ^`The lhandle 28xs arranged sothat'when'- opened position anda rivet blank may be ireely passed into the chamber 14e.

The upper end of the bodyi11is bored centrally and threaded to receive the nipple 33 of a hose 34 in order to connect the upper end of the passageway l'with a source of compressed air supply. The lower end of the body 11is threaded to receive a coupling or" a conduit 36.for the purpose of conveying the rivet to adistant point, in a manner well known to the art.

In operation, assuming the handle 28 to be in a vertical position, compressed air is con tained within hose 34 and thedoor 18 is in its Y opened positiona heated rivet is placed in the the chamber 14.Y By turning the handle through approximately 90 the opening 25 Y in the valve plug 24 is aligned'with the passageway 15 thus allowing the compressed air to pass to the chamber 14; simultaneously, due to the meshing gears `32 and 20, the door 18is lowered to its closed position which prevents the egress of i the "compressed air through the opening 16, thus the full force of the air is effective to propel the rivet through the conduit'36 to the point of use.

Upon turning the handle'to its original position the air is shut off and the door 18 is returned to its opened position, thus Ythe chamber 14 is opened for the reception of the next rivet to be passed. i

From the foregoing it will be clearly seen that I have devised a rivet-passer which is simple in construction,not liable to get' out of with said rack, and a handle adaptedto rov `handle adapted to rotate said valve.

4. A rivet passer comprising a hollow body having an aperture therein for receiving rivets, a slideway mounted longitudinally of said body adjacent said aperture, a closure slidablymounted within said slideway,

a conduit'for admitting compressed airY to said body,'a valve within said conduit', and a handle for said valve and means operatively connectingrsaid handle to said closure adapted to operate the closure Vupon the movement of the handle.

In testimony ywhereof `I hereunto affixed my signature.`Vl Y WILLIAM L. GRAY.

order and the parts of which are easily accessible for ad]ustment or replacement. And,

furthermore, with a device of thelcharacter described a single movement by the operator effects ythe operation thereof.

While I have shown my invention in but one form, it will be obvious to those skilled in the art that it is not so limited, but is sus ceptible Vot' various other changes and modiviications without departing from the spirit thereof, and I desire, therefore, that only such limitations shall be placed thereupon as areimposed by the prior lart or as yare specifically set forthin the appended claims. y

VI-Iaving thus described my invention what ters Patent is: y

1. A,A rivet passer, comprising body having a slideway formed'thereon, a door Yslidably mounted within said slideway, V a rack-mounted on said door, a rotatable valve in said body, amember mounted on said valve operatively engaging said rack and means to rotate the valve. Y 2.7A`v rivet passer comprising a hollow -Iclaim as new and desire to secure byl Leta y hollow body'having a slideway and having an aper- A ture therein for receiving rivets, a slidable door mounted in said slideway, a rack mountedon said door, arotatable valve having a i 2 gear mounted thereon in meshed relation ilo 'iis

izo 

